11 votes
Accepted

When was the term "corollary" first used in proofs?

"Corollary" is similar to the word "bonus": a little extra (i.e. an extra proposition coming from a demonstration). The term Euclid uses is πόρισμα "porism," which ...
Michael E2's user avatar
  • 1,861
6 votes
Accepted

Why do we call it a "positive definite matrix" rather than a "positively definite matrix"?

Yes, it seems that there are linguistic reasons1 why positive definite works better than positively definite. 1BTW, for that reason, I think that it was a mistake to migrate this question from the ...
linguisticturn's user avatar
5 votes

When was the term "corollary" first used in proofs?

This is a complement to Michael's excellent answer. The source of Boethius and subsequent use is most likely Proclus's commentary on Euclid's Elements, where he organizes and names various concepts ...
Conifold's user avatar
  • 76k
4 votes

Why do we call it a "positive definite matrix" rather than a "positively definite matrix"?

As far as I know, the first appearance of the concept of positive/negative definiteness (and of indefiniteness) is in the article 271 of Gauss' Disquisitiones Arithmeticae about ternary forms. Of ...
user6530's user avatar
  • 3,870
4 votes

How did egyptian mathematical fractions evolve in antiquity?

A contibution to a discussion that ended nearly four years may appear quixotic but it is difficult to let stand an answer which, though accurately summing up Boyer's views on the subject, is ...
Jim's user avatar
  • 116
3 votes

How did egyptian mathematical fractions evolve in antiquity?

According to Carl Boyer, in his text A History of Mathematics, the earliest record we have regarding fractions in ancient Egypt comes from the Ahmes Papyrus, popularly known as the Rhind Papyrus, ...
nwr's user avatar
  • 6,859
1 vote

Harm of nature vs nurture debate?

No, at least not in the academic sector. It it now commonly held knowledge that it is not one or the other, but the interaction between nature and nurture that shapes an individual. The "debate" ...
Dr. Mom's user avatar
  • 11

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